
This is a list of cities in Iran, categorized by province. The census years listed below comes from the Statistical Center of Iran; since the year 2006 the country of Iran has had a census every 5 years. The cities that are bold are capitals of provinces, counties & districts. Iran has 31 provinces and 1245 cities.

Iran has one of the highest urban population growth rates in the world. From 1950 to 2002, the urban proportion of the population increased from 27% to 60%. The United Nations predicts that by 2030 80% of the population will live in urban areas. Most internal migrants have settled near the cities of Tehran, Isfahan, Ahvaz, and Qom. Tehran, with a population of 8.7 million, is the largest city in Iran and is the nation's capital. Tehran is home to around 11% of Iran's population. It is the hub of the country's communication and transport networks.

The counties of Iran, called shahrestan, are administrative divisions of larger provinces (ostan). The word shahrestan comes from the Persian words šahr and stân. "County", therefore, is a near equivalent to shahrestan.
District 5 is one of 22 central districts of Tehran County in Tehran Province, Iran.This district is limited to Kan River and lands of District 22 in the west and to Mohammad Ali Jenah and Ashrafi Esfahani highways in the east. At the 2010 census, its population was 793,750, in 255,333 families.

A list of cities, towns and villages in Isfahan Province of central Iran, first alphabetically then by county below. In the alphabetical list, cities are in bold text; all others are villages.

This is the list of cities in Ilam Province as of latest census of Iran (2016), ranked by population.

On Jan 4, 2020, Holeylan, having been a district of Chardavol county, became the 11th county of Ilam province.

This is a list of geographic names of Iranian origin. This list also includes geographic names which are in part derived from Iranian languages.

Tehran, the capital of Iran, possesses more than 800 well-kept parks.

Iran is subdivided into thirty-one provinces, each governed from a local centre, usually the largest local city, which is called the capital of that province. The provincial authority is headed by a Governor-general, who is appointed by the Minister of the Interior subject to approval of the cabinet.

This is a list of municipalities in Iran which have standing links to local communities in other countries. In most cases, the association, especially when formalised by local government, is known as "town twinning" or "sister cities", and while most of the places included are towns, the list also includes villages, cities, districts, and counties with similar links.